linux-kernel - [PATCH 14/79] [PATCH] move state update out of ipi

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Message-Id: <12059476393279-git-send-email-gcosta@redhat.com>
Date:	Wed, 19 Mar 2008 14:25:09 -0300
From:	Glauber de Oliveira Costa <gcosta@...hat.com>
To:	linux-kernel@...r.kernel.org
Cc:	akpm@...ux-foundation.org, tglx@...utronix.de, mingo@...e.hu,
	ak@...e.de, Glauber Costa <gcosta@...hat.com>
Subject: [PATCH 14/79] [PATCH] move state update out of ipi_lock

From: Glauber Costa <gcosta@...hat.com>

it does not need to be inside lock. Do the way i386 does.

Signed-off-by: Glauber Costa <gcosta@...hat.com>
---
 arch/x86/kernel/smpboot_64.c |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/arch/x86/kernel/smpboot_64.c b/arch/x86/kernel/smpboot_64.c
index c213345..cfcfd2c 100644
--- a/arch/x86/kernel/smpboot_64.c
+++ b/arch/x86/kernel/smpboot_64.c
@@ -233,10 +233,10 @@ void __cpuinit start_secondary(void)
 	 */
 	spin_unlock(&vector_lock);
 	cpu_set(smp_processor_id(), cpu_online_map);
-	per_cpu(cpu_state, smp_processor_id()) = CPU_ONLINE;
-
 	unlock_ipi_call_lock();
 
+	per_cpu(cpu_state, smp_processor_id()) = CPU_ONLINE;
+
 	setup_secondary_clock();
 
 	cpu_idle();
-- 
1.5.0.6

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